Home / 20,481.28-30,733.86-8,634.34

Finding the Fourth Proportional to 20,481.28, 30,733.86 and 8,634.34

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Solution

The fourth proportional to 20,481.28, 30,733.86 and 8,634.34 is: 12,956.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.28 : 30,733.86 = 8,634.34 : x
  2. Step 2: Convert to fraction form
    20,481.28/30,733.86 = 8,634.34/x
  3. Step 3: Cross multiply
    20,481.28x = 30,733.86 × 8,634.34
  4. Step 4: Simplify right side
    20,481.28x = 265,366,596.75
  5. Step 5: Solve for x
    x = 265,366,596.75/20,481.28
  6. Step 6: Final answer
    x = 12,956.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.